<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Current UNIX Day</title>
    <style>
        body {
            background-color: black;
            color: white;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            font-family: Arial, sans-serif;
            font-size: 10vw;
        }
        #counter {
            text-align: center;
        }
    </style>
</head>
<body>
    <div id="counter"></div>
    <script>
        function updateUnixDay() {
            const now = Date.now();
            const unixDay = Math.floor(now / 1000 / 86400);
            document.getElementById('counter').innerText = unixDay;
        }
        updateUnixDay();
        setInterval(updateUnixDay, 86400000);
    </script>
</body>
</html>
